The Mitsubishi HG-SN302BJ-S100 is a 3.0 kW servo motor rated for 2000 rpm base speed, delivering 14.3 Nm continuous torque with a peak current capability of 33 A. The model designation decodes to include an integrated electromagnet brake and an oil seal, making it suited for vertical-axis loads or environments where oil mist is present. Rated current sits at 11 A with a maximum of 33 A; the power rate at continuous rated torque is 23.3 kW/s, and the recommended load-to-motor inertia ratio is 15:1 or less. Keeping the inertia under that limit is essential for stable servo tuning without overshoot.
Mounting & Environment
The housing is totally enclosed, naturally cooled, with an IP67 rating. That means direct hose-down or dusty conditions are fine as long as the cable gland is also sealed. Ambient operating temperature is 0 to 40 °C non-freezing; storage extends from -15 to 70 °C. Altitude is limited to 2000 m above sea level — derating needed above that. Vibration resistance is specified at 24.5 m/s² in the X direction and 49 m/s² in Y. That Y-axis number is double, so mounting orientation matters — if the motor sees high lateral vibration along the Y axis, the housing and bearings are built for it. The vibration rank is V10, which on Mitsubishi's scale corresponds to a specific acceptance standard for unbalance. The ambient spec insists on indoor use free from corrosive gas, flammable gas, oil mist, and excessive dust. The oil seal and IP67 cover ingress, but the atmosphere around the motor still needs to stay within those limits to prevent chemical attack on the paint and nameplate.
Sourcing & Lifecycle
The HG-SN series has multiple variants — different power, speed, brake options. The 'B' in the code identifies the brake; the 'J' identifies the oil seal. If your application doesn't need the brake, there are other suffixes, but this exact code is the one to order for a drop-in replacement.